import java.util.HashSet;
import java.util.Iterator;

// Press Shift twice to open the Search Everywhere dialog and type `show whitespaces`,
// then press Enter. You can now see whitespace characters in your code.
public class Main {
    public static void main(String[] args) {
        HashSet<Integer>hashSet=new HashSet<>();
hashSet.add(12);
hashSet.add(1);
hashSet.add(2);
hashSet.add(412);
hashSet.add(152);
hashSet.add(1232);
        System.out.println(hashSet);
        Iterator<Integer> iterator = hashSet.iterator();


    }
}